I use the same graphic card as you mate, its a heaping pile of trash not much better than a 6800 and handles overclock setting even small ones crappy, Mine beeps like a dam cricket for no reason sometimes and a lot of time won't execpt new 7800 series driver updates,my system is a much weaker 2800 uni amd best I found for runnin oblivion is kill the backround pic on my computer, install oldblivion, set windows to classic visual style and use a decent prog that can clean out the temps and watnot, as for settings I alwasy kill the grass with the console command 'tg set all decals and visual properties down, here are the settings I am able/unwilling to change, Distance building/landscape, texture large, 1024x 768 res, trees objects and actors maxed. I also use oldblivion to dissemble most of the shaders in the game. With that I am able to use 150 mods to deck the world out. I am interested in wat these little tweaks can help now that I am down to my 50 mods I refuse/will never play with out active and a fresh install. but as for that card unclock it and leave it alone best advice I can give through experience, sadly If i had waited 1 more week I would have had the money to buy a 7900 or 8800 for the 6700 duo core vivo I did not have at the time, so atm I have a piece of crap card for my 5 year old comp that sounds like its going into hyperdrive when I turn it on and a new comp that is near worthless to me. ^^ edit: as for temperature dint help me too much the card is suppose to handle 115c mine never went above 45c even when clocked to max with oblvion running on highest settings, when clocked even just slightly I got that annoying lag that tessera noted
